// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright 2009-2010 Creative Product Design
 * Marc Reilly marc@cpdesign.com.au
 */

#include <linux/slab.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/mfd/core.h>
#include <linux/mfd/mc13xxx.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/i2c.h>
#include <linux/err.h>

#include "mc13xxx.h"

static const struct i2c_device_id mc13xxx_i2c_device_id[] = {
        {
                .name = "mc13892",
                .driver_data = (kernel_ulong_t)&mc13xxx_variant_mc13892,
        }, {
                .name = "mc34708",
                .driver_data = (kernel_ulong_t)&mc13xxx_variant_mc34708,
        }, {
                /* sentinel */
        }
};
MODULE_DEVICE_TABLE(i2c, mc13xxx_i2c_device_id);

static const struct of_device_id mc13xxx_dt_ids[] = {
        {
                .compatible = "fsl,mc13892",
                .data = &mc13xxx_variant_mc13892,
        }, {
                .compatible = "fsl,mc34708",
                .data = &mc13xxx_variant_mc34708,
        }, {
                /* sentinel */
        }
};
MODULE_DEVICE_TABLE(of, mc13xxx_dt_ids);

static const struct regmap_config mc13xxx_regmap_i2c_config = {
        .reg_bits = 8,
        .val_bits = 24,

        .max_register = MC13XXX_NUMREGS,

        .cache_type = REGCACHE_NONE,
};

static int mc13xxx_i2c_probe(struct i2c_client *client)
{
        struct mc13xxx *mc13xxx;
        int ret;

        mc13xxx = devm_kzalloc(&client->dev, sizeof(*mc13xxx), GFP_KERNEL);
        if (!mc13xxx)
                return -ENOMEM;

        dev_set_drvdata(&client->dev, mc13xxx);

        mc13xxx->irq = client->irq;

        mc13xxx->regmap = devm_regmap_init_i2c(client,
                                               &mc13xxx_regmap_i2c_config);
        if (IS_ERR(mc13xxx->regmap)) {
                ret = PTR_ERR(mc13xxx->regmap);
                dev_err(&client->dev, "Failed to initialize regmap: %d\n", ret);
                return ret;
        }

        mc13xxx->variant = i2c_get_match_data(client);

        return mc13xxx_common_init(&client->dev);
}

static void mc13xxx_i2c_remove(struct i2c_client *client)
{
        mc13xxx_common_exit(&client->dev);
}

static struct i2c_driver mc13xxx_i2c_driver = {
        .id_table = mc13xxx_i2c_device_id,
        .driver = {
                .name = "mc13xxx",
                .of_match_table = mc13xxx_dt_ids,
        },
        .probe = mc13xxx_i2c_probe,
        .remove = mc13xxx_i2c_remove,
};

static int __init mc13xxx_i2c_init(void)
{
        return i2c_add_driver(&mc13xxx_i2c_driver);
}
subsys_initcall(mc13xxx_i2c_init);

static void __exit mc13xxx_i2c_exit(void)
{
        i2c_del_driver(&mc13xxx_i2c_driver);
}
module_exit(mc13xxx_i2c_exit);

MODULE_DESCRIPTION("i2c driver for Freescale MC13XXX PMIC");
MODULE_AUTHOR("Marc Reilly <marc@cpdesign.com.au");
MODULE_LICENSE("GPL v2");